The Simpson Strong-Tie L90Z Reinforcing L Angle is a 9 inch, 16 gauge steel framing connector used to reinforce wood-to-wood connections. This is a reinforcing L angle designed for structural fastening and general utility reinforcement in framing applications. Model Number: L90Z. If you need a pre-engineered angle with defined fastener locations instead of fabricating a clip angle in the field, this is the kind of part that keeps the job straightforward and predictable.

What separates the L90Z from a generic angle bracket is that it is load rated and built around known fastener locations. Simpson Strong-Tie calls out that the tabulated load values account for connection eccentricities, which is the kind of detail that matters when the connector is doing real work in a framing assembly. The 9 inch length gives you more reach than shorter utility angles, which helps when you need a longer connection path across framing members.

The body is made from 54 mil, 16 gauge steel with a ZMAX coating. In practical terms, the steel thickness gives the connector the rigidity expected for structural reinforcement, while the ZMAX finish improves corrosion resistance compared to standard G90 galvanized versions. That makes the Simpson Strong-Tie L90Z Reinforcing L Angle a better fit for projects where moisture exposure or treated lumber is part of the conversation.

Another jobsite-friendly detail is the staggered nail pattern. That is not just a manufacturing choice. It helps reduce the possibility of splitting the wood during installation, especially when fastening near edges or working with framing members that do not give you much room for error. The hole layout is also well defined, so installers are not guessing where fasteners should go to match published performance.

This connector is load rated for wood and cold-formed steel applications, but its listed primary application here is fastening wood to wood. For the L90Z, supplementary product data calls for (10) 0.148 inch x 1-1/2 inch nails, and installation guidance notes that all specified fasteners must be used. Simpson also notes that the wider leg should be nailed into the joist to ensure table loads and allow correct nailing. That is the kind of small install detail that can make the difference between a connector that just looks installed and one that performs the way it was designed to.

Who is this for? Carpenters, framers, deck builders, remodelers, and general contractors who want a known connector for reinforcing corners and intersections in wood framing. It also makes sense for serious DIY users working on sheds, decks, additions, or repair work where a proper structural connector is the right answer. If you are buying for treated lumber work, the ZMAX version is the one more people should be looking at first.

Simpson Strong-Tie L90Z Reinforcing L Angle Gets the Job Done Right

If you need a longer structural angle with real load data and better corrosion resistance, this is the one to buy instead of bending up your own bracket and hoping for the best.

• Who it's for: Framers, deck builders, remodelers, and anyone reinforcing wood connections where a proper structural connector makes more sense than a generic hardware-store angle.
• Why it stands out: You get a 9 inch load-rated angle, 16 gauge steel, a staggered nail pattern to help reduce splitting, and a ZMAX finish that makes more sense for treated lumber work.
• Worth knowing: The connector only performs as intended when you use the specified fasteners in the specified locations, so do not treat it like a universal bracket.

• What is the Simpson Strong-Tie L90Z Reinforcing L Angle used for? It is used for reinforcing wood-to-wood framing connections and other general utility structural fastening applications.
• What size is the L90Z? The L90Z has a listed length of 9 inches.
• Is this connector suitable for treated lumber? Supplementary product data lists it as suitable for treated lumber, and it is commonly paired with compatible galvanized fasteners.
• What fasteners are specified? Supplementary product data lists (10) 0.148 inch x 1-1/2 inch nails, and Simpson notes that all specified fasteners should be used.